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Equity - Share Ownership Plan (Details) - Class "C" |  | 1 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 15, 2011 tranche shares | Dec. 31, 2011 tranche shares | Dec. 31, 2017 shares | Apr. 27, 2006 shares | Mar. 31, 2000 shares
Share Ownership Plan |  |  |  |  |
Capital Stock to be included in PPP (as a percent) |  |  | 10.00% |  |
Capital Stock to be included in PPP (in shares) |  |  | 98,438,098 |  |
Conversion of shares, number of shares authorized | 4,593,274 |  |  | 41,339,464 | 52,505,360
Conversion of shares, number of shares converted | 4,358,526 | 41,339,464 |  |  |
Number of tranches | tranche | 10 | 11 |  |  |
Number of shares held for conversion |  |  | 234,748 |  |

X
- Definition Represents the percentage of capital stock that should be included in Represents the number of shares that should be included in employee share ownership program sponsored by the Argentine government, as per the decree. + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of capital stock that should be included in employee share ownership program sponsored by the Argentine government, as per the decree. + References No definition available. + Details
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Namespace Prefix: | teo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of shares that are authorized for conversion. + References No definition available. + Details
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Namespace Prefix: | teo_
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Balance Type: | na
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X
- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References No definition available. + Details
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- Definition Represents number of shares held for conversion. + References No definition available. + Details
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Namespace Prefix: | teo_
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- Definition Represents number of tranches in which the shares were converted. + References No definition available. + Details
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Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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